nasm.c

   1 /* The Netwide Assembler main program module
   2  *
   3  * The Netwide Assembler is copyright (C) 1996 Simon Tatham and
   4  * Julian Hall. All rights reserved. The software is
   5  * redistributable under the license given in the file "LICENSE"
   6  * distributed in the NASM archive.
   7  */
   8
   9 #include "compiler.h"
  10
  11 #include <stdio.h>
  12 #include <stdarg.h>
  13 #include <stdlib.h>
  14 #include <string.h>
  15 #include <ctype.h>
  16 #include <inttypes.h>
  17 #include <limits.h>
  18
  19 #include "nasm.h"
  20 #include "nasmlib.h"
  21 #include "float.h"
  22 #include "stdscan.h"
  23 #include "insns.h"
  24 #include "preproc.h"
  25 #include "parser.h"
  26 #include "eval.h"
  27 #include "assemble.h"
  28 #include "labels.h"
  29 #include "outform.h"
  30 #include "listing.h"
  31
  32 struct forwrefinfo {            /* info held on forward refs. */
  33     int lineno;
  34     int operand;
  35 };
  36
  37 static int get_bits(char *value);
  38 static uint32_t get_cpu(char *cpu_str);
  39 static void parse_cmdline(int, char **);
  40 static void assemble_file(char *);
  41 static void register_output_formats(void);
  42 static void report_error_gnu(int severity, const char *fmt, ...);
  43 static void report_error_vc(int severity, const char *fmt, ...);
  44 static void report_error_common(int severity, const char *fmt,
  45                                 va_list args);
  46 static int is_suppressed_warning(int severity);
  47 static void usage(void);
  48 static efunc report_error;
  49
  50 static int using_debug_info, opt_verbose_info;
  51 bool tasm_compatible_mode = false;
  52 int pass0, passn;
  53 int maxbits = 0;
  54 int globalrel = 0;
  55
  56 static char inname[FILENAME_MAX];
  57 static char outname[FILENAME_MAX];
  58 static char listname[FILENAME_MAX];
  59 static char errname[FILENAME_MAX];
  60 static int globallineno;        /* for forward-reference tracking */
  61 /* static int pass = 0; */
  62 static struct ofmt *ofmt = NULL;
  63
  64 static FILE *error_file;        /* Where to write error messages */
  65
  66 static FILE *ofile = NULL;
  67 int optimizing = -1;            /* number of optimization passes to take */
  68 static int sb, cmd_sb = 16;     /* by default */
  69 static uint32_t cmd_cpu = IF_PLEVEL;       /* highest level by default */
  70 static uint32_t cpu = IF_PLEVEL;   /* passed to insn_size & assemble.c */
  71 bool global_offset_changed;      /* referenced in labels.c */
  72
  73 static struct location location;
  74 int in_abs_seg;                 /* Flag we are in ABSOLUTE seg */
  75 int32_t abs_seg;                   /* ABSOLUTE segment basis */
  76 int32_t abs_offset;                /* ABSOLUTE offset */
  77
  78 static struct RAA *offsets;
  79
  80 static struct SAA *forwrefs;    /* keep track of forward references */
  81 static const struct forwrefinfo *forwref;
  82
  83 static Preproc *preproc;
  84 enum op_type {
  85     op_normal,                  /* Preprocess and assemble */
  86     op_preprocess,              /* Preprocess only */
  87     op_depend,                  /* Generate dependencies */
  88     op_depend_missing_ok,       /* Generate dependencies, missing OK */
  89 };
  90 static enum op_type operating_mode;
  91
  92 /*
  93  * Which of the suppressible warnings are suppressed. Entry zero
  94  * isn't an actual warning, but it used for -w+error/-Werror.
  95  */
  96 static bool suppressed[ERR_WARN_MAX+1] = {
  97     true, false, true, false, false, true, false, true, true, false
  98 };
  99
 100 /*
 101  * The option names for the suppressible warnings. As before, entry
 102  * zero does nothing.
 103  */
 104 static const char *suppressed_names[ERR_WARN_MAX+1] = {
 105     "error", "macro-params", "macro-selfref", "orphan-labels",
 106     "number-overflow", "gnu-elf-extensions", "float-overflow",
 107     "float-denorm", "float-underflow", "float-toolong"
 108 };
 109
 110 /*
 111  * The explanations for the suppressible warnings. As before, entry
 112  * zero does nothing.
 113  */
 114 static const char *suppressed_what[ERR_WARN_MAX+1] = {
 115     "treat warnings as errors",
 116     "macro calls with wrong parameter count",
 117     "cyclic macro references",
 118     "labels alone on lines without trailing `:'",
 119     "numeric constants does not fit in 64 bits",
 120     "using 8- or 16-bit relocation in ELF32, a GNU extension",
 121     "floating point overflow",
 122     "floating point denormal",
 123     "floating point underflow",
 124     "too many digits in floating-point number"
 125 };
 126
 127 /*
 128  * This is a null preprocessor which just copies lines from input
 129  * to output. It's used when someone explicitly requests that NASM
 130  * not preprocess their source file.
 131  */
 132
 133 static void no_pp_reset(char *, int, efunc, evalfunc, ListGen *);
 134 static char *no_pp_getline(void);
 135 static void no_pp_cleanup(int);
 136 static Preproc no_pp = {
 137     no_pp_reset,
 138     no_pp_getline,
 139     no_pp_cleanup
 140 };
 141
 142 /*
 143  * get/set current offset...
 144  */
 145 #define GET_CURR_OFFS (in_abs_seg?abs_offset:\
 146                       raa_read(offsets,location.segment))
 147 #define SET_CURR_OFFS(x) (in_abs_seg?(void)(abs_offset=(x)):\
 148                          (void)(offsets=raa_write(offsets,location.segment,(x))))
 149
 150 static int want_usage;
 151 static int terminate_after_phase;
 152 int user_nolist = 0;            /* fbk 9/2/00 */
 153
 154 static void nasm_fputs(const char *line, FILE * outfile)
 155 {
 156     if (outfile) {
 157         fputs(line, outfile);
 158         putc('\n', outfile);
 159     } else
 160         puts(line);
 161 }
 162
 163 int main(int argc, char **argv)
 164 {
 165     pass0 = 1;
 166     want_usage = terminate_after_phase = false;
 167     report_error = report_error_gnu;
 168
 169     error_file = stderr;
 170
 171     nasm_set_malloc_error(report_error);
 172     offsets = raa_init();
 173     forwrefs = saa_init((int32_t)sizeof(struct forwrefinfo));
 174
 175     preproc = &nasmpp;
 176     operating_mode = op_normal;
 177
 178     seg_init();
 179
 180     register_output_formats();
 181
 182     parse_cmdline(argc, argv);
 183
 184     if (terminate_after_phase) {
 185         if (want_usage)
 186             usage();
 187         return 1;
 188     }
 189
 190     /* If debugging info is disabled, suppress any debug calls */
 191     if (!using_debug_info)
 192         ofmt->current_dfmt = &null_debug_form;
 193
 194     if (ofmt->stdmac)
 195         pp_extra_stdmac(ofmt->stdmac);
 196     parser_global_info(ofmt, &location);
 197     eval_global_info(ofmt, lookup_label, &location);
 198
 199     /* define some macros dependent of command-line */
 200     {
 201         char temp[64];
 202         snprintf(temp, sizeof(temp), "__OUTPUT_FORMAT__=%s\n",
 203                  ofmt->shortname);
 204         pp_pre_define(temp);
 205     }
 206
 207     switch (operating_mode) {
 208     case op_depend_missing_ok:
 209         pp_include_path(NULL);  /* "assume generated" */
 210         /* fall through */
 211     case op_depend:
 212         {
 213             char *line;
 214             preproc->reset(inname, 0, report_error, evaluate, &nasmlist);
 215             if (outname[0] == '\0')
 216                 ofmt->filename(inname, outname, report_error);
 217             ofile = NULL;
 218             fprintf(stdout, "%s: %s", outname, inname);
 219             while ((line = preproc->getline()))
 220                 nasm_free(line);
 221             preproc->cleanup(0);
 222             putc('\n', stdout);
 223         }
 224         break;
 225
 226     case op_preprocess:
 227         {
 228             char *line;
 229             char *file_name = NULL;
 230             int32_t prior_linnum = 0;
 231             int lineinc = 0;
 232
 233             if (*outname) {
 234                 ofile = fopen(outname, "w");
 235                 if (!ofile)
 236                     report_error(ERR_FATAL | ERR_NOFILE,
 237                                  "unable to open output file `%s'",
 238                                  outname);
 239             } else
 240                 ofile = NULL;
 241
 242             location.known = false;
 243
 244 /*      pass = 1; */
 245             preproc->reset(inname, 2, report_error, evaluate, &nasmlist);
 246             while ((line = preproc->getline())) {
 247                 /*
 248                  * We generate %line directives if needed for later programs
 249                  */
 250                 int32_t linnum = prior_linnum += lineinc;
 251                 int altline = src_get(&linnum, &file_name);
 252                 if (altline) {
 253                     if (altline == 1 && lineinc == 1)
 254                         nasm_fputs("", ofile);
 255                     else {
 256                         lineinc = (altline != -1 || lineinc != 1);
 257                         fprintf(ofile ? ofile : stdout,
 258                                 "%%line %"PRId32"+%d %s\n", linnum, lineinc,
 259                                 file_name);
 260                     }
 261                     prior_linnum = linnum;
 262                 }
 263                 nasm_fputs(line, ofile);
 264                 nasm_free(line);
 265             }
 266             nasm_free(file_name);
 267             preproc->cleanup(0);
 268             if (ofile)
 269                 fclose(ofile);
 270             if (ofile && terminate_after_phase)
 271                 remove(outname);
 272         }
 273         break;
 274
 275     case op_normal:
 276         {
 277             /*
 278              * We must call ofmt->filename _anyway_, even if the user
 279              * has specified their own output file, because some
 280              * formats (eg OBJ and COFF) use ofmt->filename to find out
 281              * the name of the input file and then put that inside the
 282              * file.
 283              */
 284             ofmt->filename(inname, outname, report_error);
 285
 286             ofile = fopen(outname, "wb");
 287             if (!ofile) {
 288                 report_error(ERR_FATAL | ERR_NOFILE,
 289                              "unable to open output file `%s'", outname);
 290             }
 291
 292             /*
 293              * We must call init_labels() before ofmt->init() since
 294              * some object formats will want to define labels in their
 295              * init routines. (eg OS/2 defines the FLAT group)
 296              */
 297             init_labels();
 298
 299             ofmt->init(ofile, report_error, define_label, evaluate);
 300
 301             assemble_file(inname);
 302
 303             if (!terminate_after_phase) {
 304                 ofmt->cleanup(using_debug_info);
 305                 cleanup_labels();
 306             } else {
 307                 /*
 308                  * We had an fclose on the output file here, but we
 309                  * actually do that in all the object file drivers as well,
 310                  * so we're leaving out the one here.
 311                  *     fclose (ofile);
 312                  */
 313                 remove(outname);
 314                 if (listname[0])
 315                     remove(listname);
 316             }
 317         }
 318         break;
 319     }
 320
 321     if (want_usage)
 322         usage();
 323
 324     raa_free(offsets);
 325     saa_free(forwrefs);
 326     eval_cleanup();
 327     stdscan_cleanup();
 328
 329     if (terminate_after_phase)
 330         return 1;
 331     else
 332         return 0;
 333 }
 334
 335 /*
 336  * Get a parameter for a command line option.
 337  * First arg must be in the form of e.g. -f...
 338  */
 339 static char *get_param(char *p, char *q, bool *advance)
 340 {
 341     *advance = false;
 342     if (p[2]) {                 /* the parameter's in the option */
 343         p += 2;
 344         while (isspace(*p))
 345             p++;
 346         return p;
 347     }
 348     if (q && q[0]) {
 349         *advance = true;
 350         return q;
 351     }
 352     report_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
 353                  "option `-%c' requires an argument", p[1]);
 354     return NULL;
 355 }
 356
 357 /*
 358  * Copy a filename
 359  */
 360 static void copy_filename(char *dst, const char *src)
 361 {
 362     size_t len = strlen(src);
 363
 364     if (len >= (size_t)FILENAME_MAX) {
 365         report_error(ERR_FATAL | ERR_NOFILE, "file name too long");
 366         return;
 367     }
 368     strncpy(dst, src, FILENAME_MAX);
 369 }
 370
 371 struct textargs {
 372     const char *label;
 373     int value;
 374 };
 375
 376 #define OPT_PREFIX 0
 377 #define OPT_POSTFIX 1
 378 struct textargs textopts[] = {
 379     {"prefix", OPT_PREFIX},
 380     {"postfix", OPT_POSTFIX},
 381     {NULL, 0}
 382 };
 383
 384 static bool stopoptions = false;
 385 static bool process_arg(char *p, char *q)
 386 {
 387     char *param;
 388     int i;
 389     bool advance = false;
 390     bool suppress;
 391
 392     if (!p || !p[0])
 393         return false;
 394
 395     if (p[0] == '-' && !stopoptions) {
 396         if (strchr("oOfpPdDiIlFXuUZwW", p[1])) {
 397             /* These parameters take values */
 398             if (!(param = get_param(p, q, &advance)))
 399                 return advance;
 400         }
 401
 402         switch (p[1]) {
 403         case 's':
 404             error_file = stdout;
 405             break;
 406
 407         case 'o':               /* output file */
 408             copy_filename(outname, param);
 409             break;
 410
 411         case 'f':               /* output format */
 412             ofmt = ofmt_find(param);
 413             if (!ofmt) {
 414                 report_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
 415                              "unrecognised output format `%s' - "
 416                              "use -hf for a list", param);
 417             } else {
 418                 ofmt->current_dfmt = ofmt->debug_formats[0];
 419             }
 420             break;
 421
 422         case 'O':               /* Optimization level */
 423         {
 424             int opt;
 425
 426             if (!*param) {
 427                 /* Naked -O == -Ox */
 428                 optimizing = INT_MAX >> 1; /* Almost unlimited */
 429             } else {
 430                 while (*param) {
 431                     switch (*param) {
 432                     case '0': case '1': case '2': case '3': case '4':
 433                     case '5': case '6': case '7': case '8': case '9':
 434                         opt = strtoul(param, &param, 10);
 435
 436                         /* -O0 -> optimizing == -1, 0.98 behaviour */
 437                         /* -O1 -> optimizing == 0, 0.98.09 behaviour */
 438                         if (opt < 2)
 439                             optimizing = opt - 1;
 440                         else
 441                             optimizing = opt;
 442                         break;
 443
 444                     case 'v':
 445                     case '+':
 446                         param++;
 447                         opt_verbose_info = true;
 448                         break;
 449
 450                     case 'x':
 451                         param++;
 452                         optimizing = INT_MAX >> 1; /* Almost unlimited */
 453                         break;
 454
 455                     default:
 456                         report_error(ERR_FATAL,
 457                                      "unknown optimization option -O%c\n",
 458                                      *param);
 459                         break;
 460                     }
 461                 }
 462             }
 463             break;
 464         }
 465
 466         case 'p':                       /* pre-include */
 467         case 'P':
 468             pp_pre_include(param);
 469             break;
 470
 471         case 'd':                       /* pre-define */
 472         case 'D':
 473             pp_pre_define(param);
 474             break;
 475
 476         case 'u':                       /* un-define */
 477         case 'U':
 478             pp_pre_undefine(param);
 479             break;
 480
 481         case 'i':                       /* include search path */
 482         case 'I':
 483             pp_include_path(param);
 484             break;
 485
 486         case 'l':                       /* listing file */
 487             copy_filename(listname, param);
 488             break;
 489
 490         case 'Z':                       /* error messages file */
 491             strcpy(errname, param);
 492             break;
 493
 494         case 'F':                       /* specify debug format */
 495             ofmt->current_dfmt = dfmt_find(ofmt, param);
 496             if (!ofmt->current_dfmt) {
 497                 report_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
 498                              "unrecognized debug format `%s' for"
 499                              " output format `%s'",
 500                              param, ofmt->shortname);
 501             }
 502             break;
 503
 504         case 'X':               /* specify error reporting format */
 505             if (nasm_stricmp("vc", param) == 0)
 506                 report_error = report_error_vc;
 507             else if (nasm_stricmp("gnu", param) == 0)
 508                 report_error = report_error_gnu;
 509             else
 510                 report_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
 511                              "unrecognized error reporting format `%s'",
 512                              param);
 513             break;
 514
 515         case 'g':
 516             using_debug_info = true;
 517             break;
 518
 519         case 'h':
 520             printf
 521                 ("usage: nasm [-@ response file] [-o outfile] [-f format] "
 522                  "[-l listfile]\n"
 523                  "            [options...] [--] filename\n"
 524                  "    or nasm -v   for version info\n\n"
 525                  "    -t          assemble in SciTech TASM compatible mode\n"
 526                  "    -g          generate debug information in selected format.\n");
 527             printf
 528                 ("    -E (or -e)  preprocess only (writes output to stdout by default)\n"
 529                  "    -a          don't preprocess (assemble only)\n"
 530                  "    -M          generate Makefile dependencies on stdout\n"
 531                  "    -MG         d:o, missing files assumed generated\n\n"
 532                  "    -Z<file>    redirect error messages to file\n"
 533                  "    -s          redirect error messages to stdout\n\n"
 534                  "    -F format   select a debugging format\n\n"
 535                  "    -I<path>    adds a pathname to the include file path\n");
 536             printf
 537                 ("    -O<digit>   optimize branch offsets (-O0 disables, default)\n"
 538                  "    -P<file>    pre-includes a file\n"
 539                  "    -D<macro>[=<value>] pre-defines a macro\n"
 540                  "    -U<macro>   undefines a macro\n"
 541                  "    -X<format>  specifies error reporting format (gnu or vc)\n"
 542                  "    -w+foo      enables warning foo (equiv. -Wfoo)\n"
 543                  "    -w-foo      disable warning foo (equiv. -Wno-foo)\n"
 544                  "Warnings:\n");
 545             for (i = 0; i <= ERR_WARN_MAX; i++)
 546                 printf("    %-23s %s (default %s)\n",
 547                        suppressed_names[i], suppressed_what[i],
 548                        suppressed[i] ? "off" : "on");
 549             printf
 550                 ("\nresponse files should contain command line parameters"
 551                  ", one per line.\n");
 552             if (p[2] == 'f') {
 553                 printf("\nvalid output formats for -f are"
 554                        " (`*' denotes default):\n");
 555                 ofmt_list(ofmt, stdout);
 556             } else {
 557                 printf("\nFor a list of valid output formats, use -hf.\n");
 558                 printf("For a list of debug formats, use -f <form> -y.\n");
 559             }
 560             exit(0);            /* never need usage message here */
 561             break;
 562
 563         case 'y':
 564             printf("\nvalid debug formats for '%s' output format are"
 565                    " ('*' denotes default):\n", ofmt->shortname);
 566             dfmt_list(ofmt, stdout);
 567             exit(0);
 568             break;
 569
 570         case 't':
 571             tasm_compatible_mode = true;
 572             break;
 573
 574         case 'v':
 575             {
 576                 const char *nasm_version_string =
 577                     "NASM version " NASM_VER " compiled on " __DATE__
 578 #ifdef DEBUG
 579                     " with -DDEBUG"
 580 #endif
 581                     ;
 582                 puts(nasm_version_string);
 583                 exit(0);        /* never need usage message here */
 584             }
 585             break;
 586
 587         case 'e':              /* preprocess only */
 588         case 'E':
 589             operating_mode = op_preprocess;
 590             break;
 591
 592         case 'a':              /* assemble only - don't preprocess */
 593             preproc = &no_pp;
 594             break;
 595
 596         case 'W':
 597             if (param[0] == 'n' && param[1] == 'o' && param[2] == '-') {
 598                 suppress = true;
 599                 param += 3;
 600             } else {
 601                 suppress = false;
 602             }
 603             goto set_warning;
 604
 605         case 'w':
 606             if (param[0] != '+' && param[0] != '-') {
 607                 report_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
 608                              "invalid option to `-w'");
 609                 break;
 610             }
 611             suppress = (param[0] == '-');
 612             param++;
 613             goto set_warning;
 614         set_warning:
 615             for (i = 0; i <= ERR_WARN_MAX; i++)
 616                 if (!nasm_stricmp(param, suppressed_names[i]))
 617                     break;
 618             if (i <= ERR_WARN_MAX)
 619                 suppressed[i] = suppress;
 620             else if (!nasm_stricmp(param, "all"))
 621                 for (i = 1; i <= ERR_WARN_MAX; i++)
 622                     suppressed[i] = suppress;
 623             else if (!nasm_stricmp(param, "none"))
 624                 for (i = 1; i <= ERR_WARN_MAX; i++)
 625                     suppressed[i] = !suppress;
 626             else
 627                 report_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
 628                              "invalid warning `%s'", param);
 629             break;
 630
 631         case 'M':
 632             operating_mode = p[2] == 'G' ? op_depend_missing_ok : op_depend;
 633             break;
 634
 635         case '-':
 636             {
 637                 int s;
 638
 639                 if (p[2] == 0) {        /* -- => stop processing options */
 640                     stopoptions = 1;
 641                     break;
 642                 }
 643                 for (s = 0; textopts[s].label; s++) {
 644                     if (!nasm_stricmp(p + 2, textopts[s].label)) {
 645                         break;
 646                     }
 647                 }
 648
 649                 switch (s) {
 650
 651                 case OPT_PREFIX:
 652                 case OPT_POSTFIX:
 653                     {
 654                         if (!q) {
 655                             report_error(ERR_NONFATAL | ERR_NOFILE |
 656                                          ERR_USAGE,
 657                                          "option `--%s' requires an argument",
 658                                          p + 2);
 659                             break;
 660                         } else {
 661                             advance = 1, param = q;
 662                         }
 663
 664                         if (s == OPT_PREFIX) {
 665                             strncpy(lprefix, param, PREFIX_MAX - 1);
 666                             lprefix[PREFIX_MAX - 1] = 0;
 667                             break;
 668                         }
 669                         if (s == OPT_POSTFIX) {
 670                             strncpy(lpostfix, param, POSTFIX_MAX - 1);
 671                             lpostfix[POSTFIX_MAX - 1] = 0;
 672                             break;
 673                         }
 674                         break;
 675                     }
 676                 default:
 677                     {
 678                         report_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
 679                                      "unrecognised option `--%s'", p + 2);
 680                         break;
 681                     }
 682                 }
 683                 break;
 684             }
 685
 686         default:
 687             if (!ofmt->setinfo(GI_SWITCH, &p))
 688                 report_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
 689                              "unrecognised option `-%c'", p[1]);
 690             break;
 691         }
 692     } else {
 693         if (*inname) {
 694             report_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
 695                          "more than one input file specified");
 696         } else {
 697             copy_filename(inname, p);
 698         }
 699     }
 700
 701     return advance;
 702 }
 703
 704 #define ARG_BUF_DELTA 128
 705
 706 static void process_respfile(FILE * rfile)
 707 {
 708     char *buffer, *p, *q, *prevarg;
 709     int bufsize, prevargsize;
 710
 711     bufsize = prevargsize = ARG_BUF_DELTA;
 712     buffer = nasm_malloc(ARG_BUF_DELTA);
 713     prevarg = nasm_malloc(ARG_BUF_DELTA);
 714     prevarg[0] = '\0';
 715
 716     while (1) {                 /* Loop to handle all lines in file */
 717         p = buffer;
 718         while (1) {             /* Loop to handle long lines */
 719             q = fgets(p, bufsize - (p - buffer), rfile);
 720             if (!q)
 721                 break;
 722             p += strlen(p);
 723             if (p > buffer && p[-1] == '\n')
 724                 break;
 725             if (p - buffer > bufsize - 10) {
 726                 int offset;
 727                 offset = p - buffer;
 728                 bufsize += ARG_BUF_DELTA;
 729                 buffer = nasm_realloc(buffer, bufsize);
 730                 p = buffer + offset;
 731             }
 732         }
 733
 734         if (!q && p == buffer) {
 735             if (prevarg[0])
 736                 process_arg(prevarg, NULL);
 737             nasm_free(buffer);
 738             nasm_free(prevarg);
 739             return;
 740         }
 741
 742         /*
 743          * Play safe: remove CRs, LFs and any spurious ^Zs, if any of
 744          * them are present at the end of the line.
 745          */
 746         *(p = &buffer[strcspn(buffer, "\r\n\032")]) = '\0';
 747
 748         while (p > buffer && isspace(p[-1]))
 749             *--p = '\0';
 750
 751         p = buffer;
 752         while (isspace(*p))
 753             p++;
 754
 755         if (process_arg(prevarg, p))
 756             *p = '\0';
 757
 758         if ((int) strlen(p) > prevargsize - 10) {
 759             prevargsize += ARG_BUF_DELTA;
 760             prevarg = nasm_realloc(prevarg, prevargsize);
 761         }
 762         strncpy(prevarg, p, prevargsize);
 763     }
 764 }
 765
 766 /* Function to process args from a string of args, rather than the
 767  * argv array. Used by the environment variable and response file
 768  * processing.
 769  */
 770 static void process_args(char *args)
 771 {
 772     char *p, *q, *arg, *prevarg;
 773     char separator = ' ';
 774
 775     p = args;
 776     if (*p && *p != '-')
 777         separator = *p++;
 778     arg = NULL;
 779     while (*p) {
 780         q = p;
 781         while (*p && *p != separator)
 782             p++;
 783         while (*p == separator)
 784             *p++ = '\0';
 785         prevarg = arg;
 786         arg = q;
 787         if (process_arg(prevarg, arg))
 788             arg = NULL;
 789     }
 790     if (arg)
 791         process_arg(arg, NULL);
 792 }
 793
 794 static void parse_cmdline(int argc, char **argv)
 795 {
 796     FILE *rfile;
 797     char *envreal, *envcopy = NULL, *p, *arg;
 798
 799     *inname = *outname = *listname = *errname = '\0';
 800
 801     /*
 802      * First, process the NASMENV environment variable.
 803      */
 804     envreal = getenv("NASMENV");
 805     arg = NULL;
 806     if (envreal) {
 807         envcopy = nasm_strdup(envreal);
 808         process_args(envcopy);
 809         nasm_free(envcopy);
 810     }
 811
 812     /*
 813      * Now process the actual command line.
 814      */
 815     while (--argc) {
 816         bool advance;
 817         argv++;
 818         if (argv[0][0] == '@') {
 819             /* We have a response file, so process this as a set of
 820              * arguments like the environment variable. This allows us
 821              * to have multiple arguments on a single line, which is
 822              * different to the -@resp file processing below for regular
 823              * NASM.
 824              */
 825             char *str = malloc(2048);
 826             FILE *f = fopen(&argv[0][1], "r");
 827             if (!str) {
 828                 printf("out of memory");
 829                 exit(-1);
 830             }
 831             if (f) {
 832                 while (fgets(str, 2048, f)) {
 833                     process_args(str);
 834                 }
 835                 fclose(f);
 836             }
 837             free(str);
 838             argc--;
 839             argv++;
 840         }
 841         if (!stopoptions && argv[0][0] == '-' && argv[0][1] == '@') {
 842             p = get_param(argv[0], argc > 1 ? argv[1] : NULL, &advance);
 843             if (p) {
 844                 rfile = fopen(p, "r");
 845                 if (rfile) {
 846                     process_respfile(rfile);
 847                     fclose(rfile);
 848                 } else
 849                     report_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
 850                                  "unable to open response file `%s'", p);
 851             }
 852         } else
 853             advance = process_arg(argv[0], argc > 1 ? argv[1] : NULL);
 854         argv += advance, argc -= advance;
 855     }
 856
 857     /* Look for basic command line typos.  This definitely doesn't
 858        catch all errors, but it might help cases of fumbled fingers. */
 859     if (!*inname)
 860         report_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
 861                      "no input file specified");
 862     else if (!strcmp(inname, errname) || !strcmp(inname, outname) ||
 863         !strcmp(inname, listname))
 864         report_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
 865                      "file `%s' is both input and output file",
 866                      inname);
 867
 868     if (*errname) {
 869         error_file = fopen(errname, "w");
 870         if (!error_file) {
 871             error_file = stderr;        /* Revert to default! */
 872             report_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
 873                          "cannot open file `%s' for error messages",
 874                          errname);
 875         }
 876     }
 877 }
 878
 879 /* List of directives */
 880 enum directives {
 881     D_NONE, D_ABSOLUTE, D_BITS, D_COMMON, D_CPU, D_DEBUG, D_DEFAULT,
 882     D_EXTERN, D_FLOAT, D_GLOBAL, D_LIST, D_SECTION, D_SEGMENT, D_WARNING
 883 };
 884 static const char *directives[] = {
 885     "", "absolute", "bits", "common", "cpu", "debug", "default",
 886     "extern", "float", "global", "list", "section", "segment", "warning"
 887 };
 888 static enum directives getkw(char **directive, char **value);
 889
 890 static void assemble_file(char *fname)
 891 {
 892     char *directive, *value, *p, *q, *special, *line, debugid[80];
 893     insn output_ins;
 894     int i, validid;
 895     bool rn_error;
 896     int32_t seg;
 897     int64_t offs;
 898     struct tokenval tokval;
 899     expr *e;
 900     int pass_max;
 901
 902     if (cmd_sb == 32 && cmd_cpu < IF_386)
 903         report_error(ERR_FATAL, "command line: "
 904                      "32-bit segment size requires a higher cpu");
 905
 906     pass_max = (optimizing > 0 ? optimizing : 0) + 2;   /* passes 1, optimizing, then 2 */
 907     pass0 = !(optimizing > 0);  /* start at 1 if not optimizing */
 908     for (passn = 1; pass0 <= 2; passn++) {
 909         int pass1, pass2;
 910         ldfunc def_label;
 911
 912         pass1 = pass0 == 2 ? 2 : 1;     /* 1, 1, 1, ..., 1, 2 */
 913         pass2 = passn > 1  ? 2 : 1;     /* 1, 2, 2, ..., 2, 2 */
 914         /* pass0                           0, 0, 0, ..., 1, 2 */
 915
 916         def_label = passn > 1 ? redefine_label : define_label;
 917
 918         globalbits = sb = cmd_sb;   /* set 'bits' to command line default */
 919         cpu = cmd_cpu;
 920         if (pass0 == 2) {
 921             if (*listname)
 922                 nasmlist.init(listname, report_error);
 923         }
 924         in_abs_seg = false;
 925         global_offset_changed = false;  /* set by redefine_label */
 926         location.segment = ofmt->section(NULL, pass2, &sb);
 927         globalbits = sb;
 928         if (passn > 1) {
 929             saa_rewind(forwrefs);
 930             forwref = saa_rstruct(forwrefs);
 931             raa_free(offsets);
 932             offsets = raa_init();
 933         }
 934         preproc->reset(fname, pass1, report_error, evaluate, &nasmlist);
 935         globallineno = 0;
 936         if (passn == 1)
 937             location.known = true;
 938         location.offset = offs = GET_CURR_OFFS;
 939
 940         while ((line = preproc->getline())) {
 941             enum directives d;
 942             globallineno++;
 943
 944             /* here we parse our directives; this is not handled by the 'real'
 945              * parser. */
 946             directive = line;
 947             d = getkw(&directive, &value);
 948             if (d) {
 949                 int err = 0;
 950
 951                 switch (d) {
 952                 case D_SEGMENT:         /* [SEGMENT n] */
 953                 case D_SECTION:
 954                     seg = ofmt->section(value, pass2, &sb);
 955                     if (seg == NO_SEG) {
 956                         report_error(pass1 == 1 ? ERR_NONFATAL : ERR_PANIC,
 957                                      "segment name `%s' not recognized",
 958                                      value);
 959                     } else {
 960                         in_abs_seg = false;
 961                         location.segment = seg;
 962                     }
 963                     break;
 964                 case D_EXTERN:          /* [EXTERN label:special] */
 965                     if (*value == '$')
 966                         value++;        /* skip initial $ if present */
 967                     if (pass0 == 2) {
 968                         q = value;
 969                         while (*q && *q != ':')
 970                             q++;
 971                         if (*q == ':') {
 972                             *q++ = '\0';
 973                             ofmt->symdef(value, 0L, 0L, 3, q);
 974                         }
 975                     } else if (passn == 1) {
 976                         q = value;
 977                         validid = true;
 978                         if (!isidstart(*q))
 979                             validid = false;
 980                         while (*q && *q != ':') {
 981                             if (!isidchar(*q))
 982                                 validid = false;
 983                             q++;
 984                         }
 985                         if (!validid) {
 986                             report_error(ERR_NONFATAL,
 987                                          "identifier expected after EXTERN");
 988                             break;
 989                         }
 990                         if (*q == ':') {
 991                             *q++ = '\0';
 992                             special = q;
 993                         } else
 994                             special = NULL;
 995                         if (!is_extern(value)) {        /* allow re-EXTERN to be ignored */
 996                             int temp = pass0;
 997                             pass0 = 1;  /* fake pass 1 in labels.c */
 998                             declare_as_global(value, special,
 999                                               report_error);
1000                             define_label(value, seg_alloc(), 0L, NULL,
1001                                          false, true, ofmt, report_error);
1002                             pass0 = temp;
1003                         }
1004                     }           /* else  pass0 == 1 */
1005                     break;
1006                 case D_BITS:            /* [BITS bits] */
1007                     globalbits = sb = get_bits(value);
1008                     break;
1009                 case D_GLOBAL:          /* [GLOBAL symbol:special] */
1010                     if (*value == '$')
1011                         value++;        /* skip initial $ if present */
1012                     if (pass0 == 2) {   /* pass 2 */
1013                         q = value;
1014                         while (*q && *q != ':')
1015                             q++;
1016                         if (*q == ':') {
1017                             *q++ = '\0';
1018                             ofmt->symdef(value, 0L, 0L, 3, q);
1019                         }
1020                     } else if (pass2 == 1) {    /* pass == 1 */
1021                         q = value;
1022                         validid = true;
1023                         if (!isidstart(*q))
1024                             validid = false;
1025                         while (*q && *q != ':') {
1026                             if (!isidchar(*q))
1027                                 validid = false;
1028                             q++;
1029                         }
1030                         if (!validid) {
1031                             report_error(ERR_NONFATAL,
1032                                          "identifier expected after GLOBAL");
1033                             break;
1034                         }
1035                         if (*q == ':') {
1036                             *q++ = '\0';
1037                             special = q;
1038                         } else
1039                             special = NULL;
1040                         declare_as_global(value, special, report_error);
1041                     }           /* pass == 1 */
1042                     break;
1043                 case D_COMMON:          /* [COMMON symbol size:special] */
1044                     if (*value == '$')
1045                         value++;        /* skip initial $ if present */
1046                     if (pass0 == 1) {
1047                         p = value;
1048                         validid = true;
1049                         if (!isidstart(*p))
1050                             validid = false;
1051                         while (*p && !isspace(*p)) {
1052                             if (!isidchar(*p))
1053                                 validid = false;
1054                             p++;
1055                         }
1056                         if (!validid) {
1057                             report_error(ERR_NONFATAL,
1058                                          "identifier expected after COMMON");
1059                             break;
1060                         }
1061                         if (*p) {
1062                             int64_t size;
1063
1064                             while (*p && isspace(*p))
1065                                 *p++ = '\0';
1066                             q = p;
1067                             while (*q && *q != ':')
1068                                 q++;
1069                             if (*q == ':') {
1070                                 *q++ = '\0';
1071                                 special = q;
1072                             } else
1073                                 special = NULL;
1074                             size = readnum(p, &rn_error);
1075                             if (rn_error)
1076                                 report_error(ERR_NONFATAL,
1077                                              "invalid size specified"
1078                                              " in COMMON declaration");
1079                             else
1080                                 define_common(value, seg_alloc(), size,
1081                                               special, ofmt, report_error);
1082                         } else
1083                             report_error(ERR_NONFATAL,
1084                                          "no size specified in"
1085                                          " COMMON declaration");
1086                     } else if (pass0 == 2) {    /* pass == 2 */
1087                         q = value;
1088                         while (*q && *q != ':') {
1089                             if (isspace(*q))
1090                                 *q = '\0';
1091                             q++;
1092                         }
1093                         if (*q == ':') {
1094                             *q++ = '\0';
1095                             ofmt->symdef(value, 0L, 0L, 3, q);
1096                         }
1097                     }
1098                     break;
1099                 case D_ABSOLUTE:                /* [ABSOLUTE address] */
1100                     stdscan_reset();
1101                     stdscan_bufptr = value;
1102                     tokval.t_type = TOKEN_INVALID;
1103                     e = evaluate(stdscan, NULL, &tokval, NULL, pass2,
1104                                  report_error, NULL);
1105                     if (e) {
1106                         if (!is_reloc(e))
1107                             report_error(pass0 ==
1108                                          1 ? ERR_NONFATAL : ERR_PANIC,
1109                                          "cannot use non-relocatable expression as "
1110                                          "ABSOLUTE address");
1111                         else {
1112                             abs_seg = reloc_seg(e);
1113                             abs_offset = reloc_value(e);
1114                         }
1115                     } else if (passn == 1)
1116                         abs_offset = 0x100;     /* don't go near zero in case of / */
1117                     else
1118                         report_error(ERR_PANIC, "invalid ABSOLUTE address "
1119                                      "in pass two");
1120                     in_abs_seg = true;
1121                     location.segment = NO_SEG;
1122                     break;
1123                 case D_DEBUG:           /* [DEBUG] */
1124                     p = value;
1125                     q = debugid;
1126                     validid = true;
1127                     if (!isidstart(*p))
1128                         validid = false;
1129                     while (*p && !isspace(*p)) {
1130                         if (!isidchar(*p))
1131                             validid = false;
1132                         *q++ = *p++;
1133                     }
1134                     *q++ = 0;
1135                     if (!validid) {
1136                         report_error(passn == 1 ? ERR_NONFATAL : ERR_PANIC,
1137                                      "identifier expected after DEBUG");
1138                         break;
1139                     }
1140                     while (*p && isspace(*p))
1141                         p++;
1142                     if (pass0 == 2)
1143                         ofmt->current_dfmt->debug_directive(debugid, p);
1144                     break;
1145                 case D_WARNING:         /* [WARNING {+|-}warn-name] */
1146                     if (pass1 == 1) {
1147                         while (*value && isspace(*value))
1148                             value++;
1149
1150                         if (*value == '+' || *value == '-') {
1151                             validid = (*value == '-') ? true : false;
1152                             value++;
1153                         } else
1154                             validid = false;
1155
1156                         for (i = 1; i <= ERR_WARN_MAX; i++)
1157                             if (!nasm_stricmp(value, suppressed_names[i]))
1158                                 break;
1159                         if (i <= ERR_WARN_MAX)
1160                             suppressed[i] = validid;
1161                         else
1162                             report_error(ERR_NONFATAL,
1163                                          "invalid warning id in WARNING directive");
1164                     }
1165                     break;
1166                 case D_CPU:             /* [CPU] */
1167                     cpu = get_cpu(value);
1168                     break;
1169                 case D_LIST:            /* [LIST {+|-}] */
1170                     while (*value && isspace(*value))
1171                         value++;
1172
1173                     if (*value == '+') {
1174                         user_nolist = 0;
1175                     } else {
1176                         if (*value == '-') {
1177                             user_nolist = 1;
1178                         } else {
1179                             err = 1;
1180                         }
1181                     }
1182                     break;
1183                 case D_DEFAULT:         /* [DEFAULT] */
1184                     stdscan_reset();
1185                     stdscan_bufptr = value;
1186                     tokval.t_type = TOKEN_INVALID;
1187                     if (stdscan(NULL, &tokval) == TOKEN_SPECIAL) {
1188                         switch ((int)tokval.t_integer) {
1189                         case S_REL:
1190                             globalrel = 1;
1191                             break;
1192                         case S_ABS:
1193                             globalrel = 0;
1194                             break;
1195                         default:
1196                             err = 1;
1197                             break;
1198                         }
1199                     } else {
1200                         err = 1;
1201                     }
1202                     break;
1203                 case D_FLOAT:
1204                     if (float_option(value)) {
1205                         report_error(pass1 == 1 ? ERR_NONFATAL : ERR_PANIC,
1206                                      "unknown 'float' directive: %s",
1207                                      value);
1208                     }
1209                     break;
1210                 default:
1211                     if (!ofmt->directive(directive, value, pass2))
1212                         report_error(pass1 == 1 ? ERR_NONFATAL : ERR_PANIC,
1213                                      "unrecognised directive [%s]",
1214                                      directive);
1215                 }
1216                 if (err) {
1217                     report_error(ERR_NONFATAL,
1218                                  "invalid parameter to [%s] directive",
1219                                  directive);
1220                 }
1221             } else {            /* it isn't a directive */
1222
1223                 parse_line(pass1, line, &output_ins,
1224                            report_error, evaluate, def_label);
1225
1226                 if (!(optimizing > 0) && pass0 == 2) {
1227                     if (forwref != NULL && globallineno == forwref->lineno) {
1228                         output_ins.forw_ref = true;
1229                         do {
1230                             output_ins.oprs[forwref->operand].opflags |=
1231                                 OPFLAG_FORWARD;
1232                             forwref = saa_rstruct(forwrefs);
1233                         } while (forwref != NULL
1234                                  && forwref->lineno == globallineno);
1235                     } else
1236                         output_ins.forw_ref = false;
1237                 }
1238
1239                 if (!(optimizing > 0) && output_ins.forw_ref) {
1240                     if (passn == 1) {
1241                         for (i = 0; i < output_ins.operands; i++) {
1242                             if (output_ins.oprs[i].
1243                                 opflags & OPFLAG_FORWARD) {
1244                                 struct forwrefinfo *fwinf =
1245                                     (struct forwrefinfo *)
1246                                     saa_wstruct(forwrefs);
1247                                 fwinf->lineno = globallineno;
1248                                 fwinf->operand = i;
1249                             }
1250                         }
1251                     } else {    /* passn > 1 */
1252                         /*
1253                          * Hack to prevent phase error in the code
1254                          *   rol ax,x
1255                          *   x equ 1
1256                          *
1257                          * If the second operand is a forward reference,
1258                          * the UNITY property of the number 1 in that
1259                          * operand is cancelled. Otherwise the above
1260                          * sequence will cause a phase error.
1261                          *
1262                          * This hack means that the above code will
1263                          * generate 286+ code.
1264                          *
1265                          * The forward reference will mean that the
1266                          * operand will not have the UNITY property on
1267                          * the first pass, so the pass behaviours will
1268                          * be consistent.
1269                          */
1270
1271                         if (output_ins.operands >= 2 &&
1272                             (output_ins.oprs[1].opflags & OPFLAG_FORWARD) &&
1273                             !(IMMEDIATE & ~output_ins.oprs[1].type))
1274                         {
1275                             /* Remove special properties bits */
1276                             output_ins.oprs[1].type &= ~REG_SMASK;
1277                         }
1278
1279                     }
1280
1281                 }
1282
1283                 /*  forw_ref */
1284                 if (output_ins.opcode == I_EQU) {
1285                     if (pass1 == 1) {
1286                         /*
1287                          * Special `..' EQUs get processed in pass two,
1288                          * except `..@' macro-processor EQUs which are done
1289                          * in the normal place.
1290                          */
1291                         if (!output_ins.label)
1292                             report_error(ERR_NONFATAL,
1293                                          "EQU not preceded by label");
1294
1295                         else if (output_ins.label[0] != '.' ||
1296                                  output_ins.label[1] != '.' ||
1297                                  output_ins.label[2] == '@') {
1298                             if (output_ins.operands == 1 &&
1299                                 (output_ins.oprs[0].type & IMMEDIATE) &&
1300                                 output_ins.oprs[0].wrt == NO_SEG) {
1301                                 int isext =
1302                                     output_ins.oprs[0].
1303                                     opflags & OPFLAG_EXTERN;
1304                                 def_label(output_ins.label,
1305                                           output_ins.oprs[0].segment,
1306                                           output_ins.oprs[0].offset, NULL,
1307                                           false, isext, ofmt,
1308                                           report_error);
1309                             } else if (output_ins.operands == 2
1310                                        && (output_ins.oprs[0].
1311                                            type & IMMEDIATE)
1312                                        && (output_ins.oprs[0].type & COLON)
1313                                        && output_ins.oprs[0].segment ==
1314                                        NO_SEG
1315                                        && output_ins.oprs[0].wrt == NO_SEG
1316                                        && (output_ins.oprs[1].
1317                                            type & IMMEDIATE)
1318                                        && output_ins.oprs[1].segment ==
1319                                        NO_SEG
1320                                        && output_ins.oprs[1].wrt ==
1321                                        NO_SEG) {
1322                                 def_label(output_ins.label,
1323                                           output_ins.oprs[0].
1324                                           offset | SEG_ABS,
1325                                           output_ins.oprs[1].offset, NULL,
1326                                           false, false, ofmt,
1327                                           report_error);
1328                             } else
1329                                 report_error(ERR_NONFATAL,
1330                                              "bad syntax for EQU");
1331                         }
1332                     } else {
1333                         /*
1334                          * Special `..' EQUs get processed here, except
1335                          * `..@' macro processor EQUs which are done above.
1336                          */
1337                         if (output_ins.label[0] == '.' &&
1338                             output_ins.label[1] == '.' &&
1339                             output_ins.label[2] != '@') {
1340                             if (output_ins.operands == 1 &&
1341                                 (output_ins.oprs[0].type & IMMEDIATE)) {
1342                                 define_label(output_ins.label,
1343                                              output_ins.oprs[0].segment,
1344                                              output_ins.oprs[0].offset,
1345                                              NULL, false, false, ofmt,
1346                                              report_error);
1347                             } else if (output_ins.operands == 2
1348                                        && (output_ins.oprs[0].
1349                                            type & IMMEDIATE)
1350                                        && (output_ins.oprs[0].type & COLON)
1351                                        && output_ins.oprs[0].segment ==
1352                                        NO_SEG
1353                                        && (output_ins.oprs[1].
1354                                            type & IMMEDIATE)
1355                                        && output_ins.oprs[1].segment ==
1356                                        NO_SEG) {
1357                                 define_label(output_ins.label,
1358                                              output_ins.oprs[0].
1359                                              offset | SEG_ABS,
1360                                              output_ins.oprs[1].offset,
1361                                              NULL, false, false, ofmt,
1362                                              report_error);
1363                             } else
1364                                 report_error(ERR_NONFATAL,
1365                                              "bad syntax for EQU");
1366                         }
1367                     }
1368                 } else {        /* instruction isn't an EQU */
1369
1370                     if (pass1 == 1) {
1371
1372                         int64_t l = insn_size(location.segment, offs, sb, cpu,
1373                                            &output_ins, report_error);
1374
1375                         /* if (using_debug_info)  && output_ins.opcode != -1) */
1376                         if (using_debug_info)
1377                         {       /* fbk 03/25/01 */
1378                             /* this is done here so we can do debug type info */
1379                             int32_t typeinfo =
1380                                 TYS_ELEMENTS(output_ins.operands);
1381                             switch (output_ins.opcode) {
1382                             case I_RESB:
1383                                 typeinfo =
1384                                     TYS_ELEMENTS(output_ins.oprs[0].
1385                                                  offset) | TY_BYTE;
1386                                 break;
1387                             case I_RESW:
1388                                 typeinfo =
1389                                     TYS_ELEMENTS(output_ins.oprs[0].
1390                                                  offset) | TY_WORD;
1391                                 break;
1392                             case I_RESD:
1393                                 typeinfo =
1394                                     TYS_ELEMENTS(output_ins.oprs[0].
1395                                                  offset) | TY_DWORD;
1396                                 break;
1397                             case I_RESQ:
1398                                 typeinfo =
1399                                     TYS_ELEMENTS(output_ins.oprs[0].
1400                                                  offset) | TY_QWORD;
1401                                 break;
1402                             case I_REST:
1403                                 typeinfo =
1404                                     TYS_ELEMENTS(output_ins.oprs[0].
1405                                                  offset) | TY_TBYTE;
1406                                 break;
1407                             case I_DB:
1408                                 typeinfo |= TY_BYTE;
1409                                 break;
1410                             case I_DW:
1411                                 typeinfo |= TY_WORD;
1412                                 break;
1413                             case I_DD:
1414                                 if (output_ins.eops_float)
1415                                     typeinfo |= TY_FLOAT;
1416                                 else
1417                                     typeinfo |= TY_DWORD;
1418                                 break;
1419                             case I_DQ:
1420                                 typeinfo |= TY_QWORD;
1421                                 break;
1422                             case I_DT:
1423                                 typeinfo |= TY_TBYTE;
1424                                 break;
1425                             case I_DO:
1426                                 typeinfo |= TY_OWORD;
1427                                 break;
1428                             default:
1429                                 typeinfo = TY_LABEL;
1430
1431                             }
1432
1433                             ofmt->current_dfmt->debug_typevalue(typeinfo);
1434
1435                         }
1436                         if (l != -1) {
1437                             offs += l;
1438                             SET_CURR_OFFS(offs);
1439                         }
1440                         /*
1441                          * else l == -1 => invalid instruction, which will be
1442                          * flagged as an error on pass 2
1443                          */
1444
1445                     } else {
1446                         offs += assemble(location.segment, offs, sb, cpu,
1447                                          &output_ins, ofmt, report_error,
1448                                          &nasmlist);
1449                         SET_CURR_OFFS(offs);
1450
1451                     }
1452                 }               /* not an EQU */
1453                 cleanup_insn(&output_ins);
1454             }
1455             nasm_free(line);
1456             location.offset = offs = GET_CURR_OFFS;
1457         }                       /* end while (line = preproc->getline... */
1458
1459         if (pass1 == 2 && global_offset_changed)
1460             report_error(ERR_NONFATAL,
1461                          "phase error detected at end of assembly.");
1462
1463         if (pass1 == 1)
1464             preproc->cleanup(1);
1465
1466         if (pass1 == 1 && terminate_after_phase) {
1467             fclose(ofile);
1468             remove(outname);
1469             if (want_usage)
1470                 usage();
1471             exit(1);
1472         }
1473         if (passn >= pass_max - 2 ||
1474             (passn > 1 && !global_offset_changed))
1475             pass0++;
1476     }
1477
1478     preproc->cleanup(0);
1479     nasmlist.cleanup();
1480 #if 1
1481     if (optimizing > 0 && opt_verbose_info)     /*  -On and -Ov switches */
1482         fprintf(stdout,
1483                 "info:: assembly required 1+%d+1 passes\n", passn-3);
1484 #endif
1485 }                               /* exit from assemble_file (...) */
1486
1487 static enum directives getkw(char **directive, char **value)
1488 {
1489     char *p, *q, *buf;
1490
1491     buf = *directive;
1492
1493     /*  allow leading spaces or tabs */
1494     while (*buf == ' ' || *buf == '\t')
1495         buf++;
1496
1497     if (*buf != '[')
1498         return 0;
1499
1500     p = buf;
1501
1502     while (*p && *p != ']')
1503         p++;
1504
1505     if (!*p)
1506         return 0;
1507
1508     q = p++;
1509
1510     while (*p && *p != ';') {
1511         if (!isspace(*p))
1512             return 0;
1513         p++;
1514     }
1515     q[1] = '\0';
1516
1517     *directive = p = buf + 1;
1518     while (*buf && *buf != ' ' && *buf != ']' && *buf != '\t')
1519         buf++;
1520     if (*buf == ']') {
1521         *buf = '\0';
1522         *value = buf;
1523     } else {
1524         *buf++ = '\0';
1525         while (isspace(*buf))
1526             buf++;              /* beppu - skip leading whitespace */
1527         *value = buf;
1528         while (*buf != ']')
1529             buf++;
1530         *buf++ = '\0';
1531     }
1532
1533     return bsii(*directive, directives, elements(directives));
1534 }
1535
1536 /**
1537  * gnu style error reporting
1538  * This function prints an error message to error_file in the
1539  * style used by GNU. An example would be:
1540  * file.asm:50: error: blah blah blah
1541  * where file.asm is the name of the file, 50 is the line number on
1542  * which the error occurs (or is detected) and "error:" is one of
1543  * the possible optional diagnostics -- it can be "error" or "warning"
1544  * or something else.  Finally the line terminates with the actual
1545  * error message.
1546  *
1547  * @param severity the severity of the warning or error
1548  * @param fmt the printf style format string
1549  */
1550 static void report_error_gnu(int severity, const char *fmt, ...)
1551 {
1552     va_list ap;
1553
1554     if (is_suppressed_warning(severity))
1555         return;
1556
1557     if (severity & ERR_NOFILE)
1558         fputs("nasm: ", error_file);
1559     else {
1560         char *currentfile = NULL;
1561         int32_t lineno = 0;
1562         src_get(&lineno, &currentfile);
1563         fprintf(error_file, "%s:%"PRId32": ", currentfile, lineno);
1564         nasm_free(currentfile);
1565     }
1566     va_start(ap, fmt);
1567     report_error_common(severity, fmt, ap);
1568     va_end(ap);
1569 }
1570
1571 /**
1572  * MS style error reporting
1573  * This function prints an error message to error_file in the
1574  * style used by Visual C and some other Microsoft tools. An example
1575  * would be:
1576  * file.asm(50) : error: blah blah blah
1577  * where file.asm is the name of the file, 50 is the line number on
1578  * which the error occurs (or is detected) and "error:" is one of
1579  * the possible optional diagnostics -- it can be "error" or "warning"
1580  * or something else.  Finally the line terminates with the actual
1581  * error message.
1582  *
1583  * @param severity the severity of the warning or error
1584  * @param fmt the printf style format string
1585  */
1586 static void report_error_vc(int severity, const char *fmt, ...)
1587 {
1588     va_list ap;
1589
1590     if (is_suppressed_warning(severity))
1591         return;
1592
1593     if (severity & ERR_NOFILE)
1594         fputs("nasm: ", error_file);
1595     else {
1596         char *currentfile = NULL;
1597         int32_t lineno = 0;
1598         src_get(&lineno, &currentfile);
1599         fprintf(error_file, "%s(%"PRId32") : ", currentfile, lineno);
1600         nasm_free(currentfile);
1601     }
1602     va_start(ap, fmt);
1603     report_error_common(severity, fmt, ap);
1604     va_end(ap);
1605 }
1606
1607 /**
1608  * check for supressed warning
1609  * checks for suppressed warning or pass one only warning and we're
1610  * not in pass 1
1611  *
1612  * @param severity the severity of the warning or error
1613  * @return true if we should abort error/warning printing
1614  */
1615 static int is_suppressed_warning(int severity)
1616 {
1617     /*
1618      * See if it's a suppressed warning.
1619      */
1620     return ((severity & ERR_MASK) == ERR_WARNING &&
1621             (severity & ERR_WARN_MASK) != 0 &&
1622             suppressed[(severity & ERR_WARN_MASK) >> ERR_WARN_SHR]) ||
1623         /*
1624          * See if it's a pass-one only warning and we're not in pass
1625          * zero or one.
1626          */
1627         ((severity & ERR_PASS1) && pass0 != 1);
1628 }
1629
1630 /**
1631  * common error reporting
1632  * This is the common back end of the error reporting schemes currently
1633  * implemented.  It prints the nature of the warning and then the
1634  * specific error message to error_file and may or may not return.  It
1635  * doesn't return if the error severity is a "panic" or "debug" type.
1636  *
1637  * @param severity the severity of the warning or error
1638  * @param fmt the printf style format string
1639  */
1640 static void report_error_common(int severity, const char *fmt,
1641                                 va_list args)
1642 {
1643     switch (severity & ERR_MASK) {
1644     case ERR_WARNING:
1645         fputs("warning: ", error_file);
1646         break;
1647     case ERR_NONFATAL:
1648         fputs("error: ", error_file);
1649         break;
1650     case ERR_FATAL:
1651         fputs("fatal: ", error_file);
1652         break;
1653     case ERR_PANIC:
1654         fputs("panic: ", error_file);
1655         break;
1656     case ERR_DEBUG:
1657         fputs("debug: ", error_file);
1658         break;
1659     }
1660
1661     vfprintf(error_file, fmt, args);
1662     putc('\n', error_file);
1663
1664     if (severity & ERR_USAGE)
1665         want_usage = true;
1666
1667     switch (severity & ERR_MASK) {
1668     case ERR_DEBUG:
1669         /* no further action, by definition */
1670         break;
1671     case ERR_WARNING:
1672         if (!suppressed[0])     /* Treat warnings as errors */
1673             terminate_after_phase = true;
1674         break;
1675     case ERR_NONFATAL:
1676         terminate_after_phase = true;
1677         break;
1678     case ERR_FATAL:
1679         if (ofile) {
1680             fclose(ofile);
1681             remove(outname);
1682         }
1683         if (want_usage)
1684             usage();
1685         exit(1);                /* instantly die */
1686         break;                  /* placate silly compilers */
1687     case ERR_PANIC:
1688         fflush(NULL);
1689         /*      abort();        *//* halt, catch fire, and dump core */
1690         exit(3);
1691         break;
1692     }
1693 }
1694
1695 static void usage(void)
1696 {
1697     fputs("type `nasm -h' for help\n", error_file);
1698 }
1699
1700 static void register_output_formats(void)
1701 {
1702     ofmt = ofmt_register(report_error);
1703 }
1704
1705 #define BUF_DELTA 512
1706
1707 static FILE *no_pp_fp;
1708 static efunc no_pp_err;
1709 static ListGen *no_pp_list;
1710 static int32_t no_pp_lineinc;
1711
1712 static void no_pp_reset(char *file, int pass, efunc error, evalfunc eval,
1713                         ListGen * listgen)
1714 {
1715     src_set_fname(nasm_strdup(file));
1716     src_set_linnum(0);
1717     no_pp_lineinc = 1;
1718     no_pp_err = error;
1719     no_pp_fp = fopen(file, "r");
1720     if (!no_pp_fp)
1721         no_pp_err(ERR_FATAL | ERR_NOFILE,
1722                   "unable to open input file `%s'", file);
1723     no_pp_list = listgen;
1724     (void)pass;                 /* placate compilers */
1725     (void)eval;                 /* placate compilers */
1726 }
1727
1728 static char *no_pp_getline(void)
1729 {
1730     char *buffer, *p, *q;
1731     int bufsize;
1732
1733     bufsize = BUF_DELTA;
1734     buffer = nasm_malloc(BUF_DELTA);
1735     src_set_linnum(src_get_linnum() + no_pp_lineinc);
1736
1737     while (1) {                 /* Loop to handle %line */
1738
1739         p = buffer;
1740         while (1) {             /* Loop to handle long lines */
1741             q = fgets(p, bufsize - (p - buffer), no_pp_fp);
1742             if (!q)
1743                 break;
1744             p += strlen(p);
1745             if (p > buffer && p[-1] == '\n')
1746                 break;
1747             if (p - buffer > bufsize - 10) {
1748                 int offset;
1749                 offset = p - buffer;
1750                 bufsize += BUF_DELTA;
1751                 buffer = nasm_realloc(buffer, bufsize);
1752                 p = buffer + offset;
1753             }
1754         }
1755
1756         if (!q && p == buffer) {
1757             nasm_free(buffer);
1758             return NULL;
1759         }
1760
1761         /*
1762          * Play safe: remove CRs, LFs and any spurious ^Zs, if any of
1763          * them are present at the end of the line.
1764          */
1765         buffer[strcspn(buffer, "\r\n\032")] = '\0';
1766
1767         if (!nasm_strnicmp(buffer, "%line", 5)) {
1768             int32_t ln;
1769             int li;
1770             char *nm = nasm_malloc(strlen(buffer));
1771             if (sscanf(buffer + 5, "%"PRId32"+%d %s", &ln, &li, nm) == 3) {
1772                 nasm_free(src_set_fname(nm));
1773                 src_set_linnum(ln);
1774                 no_pp_lineinc = li;
1775                 continue;
1776             }
1777             nasm_free(nm);
1778         }
1779         break;
1780     }
1781
1782     no_pp_list->line(LIST_READ, buffer);
1783
1784     return buffer;
1785 }
1786
1787 static void no_pp_cleanup(int pass)
1788 {
1789     (void)pass;                     /* placate GCC */
1790     fclose(no_pp_fp);
1791 }
1792
1793 static uint32_t get_cpu(char *value)
1794 {
1795     if (!strcmp(value, "8086"))
1796         return IF_8086;
1797     if (!strcmp(value, "186"))
1798         return IF_186;
1799     if (!strcmp(value, "286"))
1800         return IF_286;
1801     if (!strcmp(value, "386"))
1802         return IF_386;
1803     if (!strcmp(value, "486"))
1804         return IF_486;
1805     if (!strcmp(value, "586") || !nasm_stricmp(value, "pentium"))
1806         return IF_PENT;
1807     if (!strcmp(value, "686") ||
1808         !nasm_stricmp(value, "ppro") ||
1809         !nasm_stricmp(value, "pentiumpro") || !nasm_stricmp(value, "p2"))
1810         return IF_P6;
1811     if (!nasm_stricmp(value, "p3") || !nasm_stricmp(value, "katmai"))
1812         return IF_KATMAI;
1813     if (!nasm_stricmp(value, "p4") ||   /* is this right? -- jrc */
1814         !nasm_stricmp(value, "willamette"))
1815         return IF_WILLAMETTE;
1816     if (!nasm_stricmp(value, "prescott"))
1817         return IF_PRESCOTT;
1818     if (!nasm_stricmp(value, "x64") ||
1819         !nasm_stricmp(value, "x86-64"))
1820         return IF_X86_64;
1821     if (!nasm_stricmp(value, "ia64") ||
1822         !nasm_stricmp(value, "ia-64") ||
1823         !nasm_stricmp(value, "itanium") ||
1824         !nasm_stricmp(value, "itanic") || !nasm_stricmp(value, "merced"))
1825         return IF_IA64;
1826
1827     report_error(pass0 < 2 ? ERR_NONFATAL : ERR_FATAL,
1828                  "unknown 'cpu' type");
1829
1830     return IF_PLEVEL;           /* the maximum level */
1831 }
1832
1833 static int get_bits(char *value)
1834 {
1835     int i;
1836
1837     if ((i = atoi(value)) == 16)
1838         return i;               /* set for a 16-bit segment */
1839     else if (i == 32) {
1840         if (cpu < IF_386) {
1841             report_error(ERR_NONFATAL,
1842                          "cannot specify 32-bit segment on processor below a 386");
1843             i = 16;
1844         }
1845     } else if (i == 64) {
1846         if (cpu < IF_X86_64) {
1847             report_error(ERR_NONFATAL,
1848                          "cannot specify 64-bit segment on processor below an x86-64");
1849             i = 16;
1850         }
1851         if (i != maxbits) {
1852             report_error(ERR_NONFATAL,
1853                          "%s output format does not support 64-bit code",
1854                          ofmt->shortname);
1855             i = 16;
1856         }
1857     } else {
1858         report_error(pass0 < 2 ? ERR_NONFATAL : ERR_FATAL,
1859                      "`%s' is not a valid segment size; must be 16, 32 or 64",
1860                      value);
1861         i = 16;
1862     }
1863     return i;
1864 }
1865
1866 /* end of nasm.c */